This article describes how to hide or unhide the Options menu bar. This article also describes how to switch between full-screen mode and windowed mode.
By default, the Options menu bar is hidden in Microsoft Flight Simulator 2000, in Microsoft Flight Simulator 2002, and in Microsoft Flight Simulator 2004 - A Century of Flight. To hide or to unhide the Options menu bar, press the ALT key.
To switch between windowed and full-screen mode in Microsoft Flight Simulator, press the keyboard combination ALT+ENTER.
You can find more information about how to do this in the Help files in Flight Simulator 2000 and in Flight Simulator 2002. Similar information is also available in the Learning Center in Flight Simulator 2004 - A Century of Flight.